Semi-dry scrubbing is an air pollution control technology used to remove harmful pollutants from industrial exhaust gases. It combines elements of both dry and wet scrubbing methods, using a mixture of absorbent materials and a small amount of water. This process helps capture pollutants like sulfur dioxide and particulate matter, reducing their release into the atmosphere. In semi-dry scrubbing, a slurry of absorbent material, often containing lime or sodium bicarbonate, is sprayed into the gas stream. The pollutants react with the absorbent, forming solid byproducts that can be easily collected and disposed of, making it an efficient and environmentally friendly solution for industries.